Facebook updates photo viewer with high-res images and full-screen mode

No more than 24 hours after introducing you to Acquaintances, Facebook is rolling out a couple of new features for its photo viewer. The social network's fresh bits will let you get a resolutionary look at all those images shared by your friends, displaying shots "up to four times" bigger than before and at the highest resolution possible. Additionally, now you'll be able to check out those hi-res photos in full-screen mode, though you'll need to be on the most recent version of Firefox or Chrome to do so (sorry, Safari). Best of all, there's some extra Face-uh-oh-book goodies waiting for you after the break.